Box structure of speed reducer

Abstract

A reducer casing structure is disclosed, which comprises a front casing, a rear casing and a connecting column; the front casing and the rear casing are sealedly connected to form therein a cavity structure for accommodating a reducer; the connecting column is provided in the cavity structure and is detachably or partially detachably connected between the front casing and the rear casing, the connection mode of the connecting column with the front casing and the rear casing is bolt connection or integrated casting, the connecting column is used to improve connection strength of the reducer casing structure, reduce casing vibration and improve NVH performance of the reducer. The reducer casing structure according to the present disclosure reduces the deformation of the front casing and the rear casing of the reducer during operation, and improves the NVH of the reducer itself or the whole power assembly; moreover, the reducer casing structure is easy to install and occupies less space.

1 . A reducer casing structure, characterized by comprising: a front casing, a rear casing and a connecting column;
 the front casing and the rear casing are sealedly connected to form therein a cavity structure for accommodating a reducer;   the connecting column is provided in the cavity structure and is detachably or partially detachably connected between the front casing and the rear casing, the connection mode of the connecting column with the front casing and the rear casing is bolt connection or integrated casting, the connecting column is used to improve connection strength of the reducer casing structure, reduce casing vibration and improve NVH performance of the reducer.   
     
     
         2 . The reducer casing structure according to  claim 1 , wherein two ends of the connecting column are connected and fixed with the front casing and the rear casing respectively through one or more bolts. 
     
     
         3 . The reducer casing structure according to  claim 1 , wherein the connecting column is integrally cast with one of the front casing and the rear casing, and is connected and fixed with the other through one or more bolts. 
     
     
         4 . The reducer casing structure according to  claim 1 , wherein the connecting column includes at least two sections which are integrally cast with the front casing and the rear casing respectively, and the sections of the connecting column are connected and fixed to each other by one or more bolts. 
     
     
         5 . The reducer casing structure according to  claim 1 , wherein the connecting column is made of an alloy. 
     
     
         6 . The reducer casing structure according to  claim 5 , wherein the alloy is any one of alloy steel, aluminum alloy and copper alloy. 
     
     
         7 . The reducer casing structure according to  claim 1 , wherein one or more connecting columns are provided. 
     
     
         8 . The reducer casing structure according to  claim 1 , wherein the connecting column is of a stepped shape. 
     
     
         9 . The reducer casing structure according to  claim 1 , wherein the bolt is inserted into the front casing or the rear casing and the connecting column from outside of the front casing or the rear casing. 
     
     
         10 . The reducer casing structure according to  claim 1 , wherein the front casing and the rear casing are provided with flanges perpendicular to the front casing or the rear casing at their sealed connection, and the flanges are connected and fixed by bolts and nuts. 
     
     
         11 . The reducer casing structure according to  claim 2 , wherein one or more connecting columns are provided. 
     
     
         12 . The reducer casing structure according to  claim 3 , wherein one or more connecting columns are provided. 
     
     
         13 . The reducer casing structure according to  claim 4 , wherein one or more connecting columns are provided. 
     
     
         14 . The reducer casing structure according to  claim 5 , wherein one or more connecting columns are provided. 
     
     
         15 . The reducer casing structure according to  claim 2 , wherein the connecting column is of a stepped shape. 
     
     
         16 . The reducer casing structure according to  claim 3 , wherein the connecting column is of a stepped shape. 
     
     
         17 . The reducer casing structure according to  claim 2 , wherein the bolt is inserted into the front casing or the rear casing and the connecting column from outside of the front casing or the rear casing. 
     
     
         18 . The reducer casing structure according to  claim 3 , wherein the bolt is inserted into the front casing or the rear casing and the connecting column from outside of the front casing or the rear casing. 
     
     
         19 . The reducer casing structure according to  claim 2 , wherein the front casing and the rear casing are provided with flanges perpendicular to the front casing or the rear casing at their sealed connection, and the flanges are connected and fixed by bolts and nuts. 
     
     
         20 . The reducer casing structure according to  claim 3 , wherein the front casing and the rear casing are provided with flanges perpendicular to the front casing or the rear casing at their sealed connection, and the flanges are connected and fixed by bolts and nuts.